You can't say it's more trouble than it's worth because it's a sweeping generalisation, and different diets work better for different people.

Calorie restricted diet I have failed at many times before. Keto was difficult for the first month but now it's a doddle.

There's nothing wrong with carbohydrates either. Never said that. Carbs in moderation is a diet that most people I know seem to exist healthily and happily off. However elimination of carbohydrates is a tactic that's giving me awesome results, making me happy and more energetic. You do not need to consume carbohydrates to stay alive of be healthy.